Peopellee



2 Sh eats-Sheet 1.

(No Model.)

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WITNESSES:

ATTORNEYS Vl B 2 Shets-Sheet 2. H. MILLER.

PROPELLER (N Model.)

No. 579,889. Patented Ma,r30, 1897.A

INVENTOR Henz/Z'ZZIV. m/l gg ATTORNEYS W|TNESSES llNiTnn FTATES PATENTOrmea.

HENRY MILLER, OF NEX/V YORK, N. Y., ASSIGNOR OF ONE-HALF TO CARL GOERG,OF SAME PLACE.

PROPELLER.

SPECIFICATION forming part of Letters Patent No. 579,889, dated March30, 1897.

Application filed December 3l, 1896. Serial No. 617,635. (No model.)

T all whom t may concern:

Be it known that I, HENRY MILLER, a citizen of the United States,residing at New York, in the county and State of New York, have inventednew and useful Improvements in Propellers, of which the following is aspecification.

This invention relates to a propeller with reversible or adjustableblades which can be ro locked to the propeller-shaft; and the inventionprovides a practical propeller with reversible or adjustable blades inwhich the power tending to set the blades to neutral or inactiveposition istaken off the adjustinglever and transferred to the shaft.

This invention is illustrated in the annexed drawings, in which- Figure1 is a sectional side elevation of a propeller-hub with blades andshaft. Fig. 2 is a section along a x, Fig. 1. Fig. 3 is a view like Fig.2 with parts in a different position than in Fig. 2. Fig. 4 is a sectionalong o5' Qc', Fig. 2. Fig. 5 is adetail view of a reversing oradjusting lever. Fig. G is a section along y y, Fig. 1. Fig. 7 is asection along ,e e, Fig. 1.

The propeller-hub is made in sections 1, longitudinally separated, asalong line or division 2, Fig. 2, said sections being suitablyconnected, as by bolts or fastenings 3. The propeller consists of thishub with the blades 4, anysuitable number of the latter being applied.These blades are shiftable or reversible, each blade having a stem5,1otatively journaled or seated in hub 1. Each stem 5 connects by acrank-pin 6 with slotted arms or lugs 7, extending from or forming partof ashifter or rod 8, extending through or seated in the tubularpropeller-shaft9. The hub l is secured to shaft 9, so as to turn withthe latter and to be immovable or fixed to such shaft. The shifter S canbe moved longitudinally in the shaft, as presently explained.

The shaft 9 has secured thereto a tube or tubular coupling 10, Fig. 1,secured, as by anges 11 and 12, to the driving-shaft 13, receiving poweror motion in any suitable way. The shifter 8 is connected by arms orpieces 14 with a sliding sleeve or collar 15. The coupling beingsuitably slitted, as at 16,

the shifter S, with its arms 14 and sleeve 15, is free to be slid orshifted back and forth..

The sleeve 15 can be shifted by handle or lever 17, suitablyfulcrumed,as at 1S. The lever 17 is suitably connected to the sleeve 15, thislever being shown with a loop 19, Fig. 7, to which at 2O are pivotedlugs 21, engaging in a suitable recess or between shoulders on sleevel5, so that the latter is free to turn, but cannot shift independentlyof this primary lever 17. `When the sleeve 15 is shifted in onedirection, its shoulder 22 is engaged by catch or hooks 23, held ormoved by springs 24 to engaging position. Vhen shifted in the otherdirection, the sleeve 15 has its shoulder 22' engaged by catch or hooks23'.

To disengage a catch or set of catches 22 y or 22', a releasing ring orwedge 25 or 25 is moved toward its respective cate 23 or 23 to move thelatter against the action of spring 24 to release the shoulder 22 or 22and allow the sleeve 15 to shift. These rings 25 and 25 are slidablymounted on sleeve 15 and can be shifted or slid by levers 26 and 27,fulcrumed at 2S to lever 17. The springs 29 normally hold the secondarylevers 26 27 to take the releaser or rings 25 and 25 away from thecatches or locks 23 and 23.

rl`he catches 23 and 23' are secured to or carried by thepropeller-shaft 9 or coupling 10, and when sleeve 15 is engaged by onecatch or another said sleeve, with shifter 8, is locked to the shaft 9,so that the strain or force exerted by the propeller-blades 4, tendingto shift to neutral or inactive position, is taken off the handle orlever 17 and is taken up by the shaft 9 and catches or locks 23and 23.

In the coupling 10, Fig. 1, is a tube 30, having arms or lugs 31, whichby means of screws 32 enable the tube 30 to be set or forced toward theshaft 9. The coupling 10 is suitably slotted, as at 33, to allow for themovement or shift of lugs 3l, and the sleeve the packing 35 by theadjustment of packing-tube 30 leak or escape from the inside of IOOshaft 9 is prevented. The paekingtube 30, with packing 35, thus forms astuffing-box. Leak along the outside of shaft 9 can be prevented bysuitable well-known means, as a stuiiing-box. (Shown at 36.) Thepropellershaft 9, with tubular coupling or sleeve and driving-shaft 13,can be secured against longitudinal motion in well-known way.

By providing the shaft 0 with lugs 37, Fig. 2, and suitably orcorrespondingly rccessing the sections of hub 1 the hub-sections whenclasped and secured about shaft f) will be held by lugs 37 againstshifting or turning on said shaft. The lugs 37 can be replaced by acircular rim or shoulder, preventing lon gitudinal shift of hub 1 awell-known key being used to leek the hub against rotation.

The lugs or key 1i must of course be made of sufficient strength towithstand the strain or tendency of the blades or wings 4 to shift.

The rings and 25 are not only shiftable, but also rotary, on the sleeve15, and said rings shift with, but can rotate independently of, thelevers 26.

Any hook or catch, as well known, can be provided to keep a lever orlevers 2G locked to lever 17 against the action of spring 29. By havingthe catches 23' or the collars bearing such catches ad justabl y fixedto shaft 9 or coupling 10, as by set-screws, suoli eollars or catchescan be set for any desired pitch of the blades 4.

By having straps or caps 38, Fig. 4, eonneeted by screws or fastenings39, Fig. 1, to a hub-section 1 and allowing the blade-stems 5 to rotatebetween such hub-section and cap any wear can be taken up by atightening of such cap.

lVhat I claim as new, and desire to secure by Letters Patent, is-

1. A propeller provided with shiftable or reversible blades, a shifteror rod for said blades, a shaft for the propeller and a lock or catchfor locking the shifter to the shaft substantially as described.

2. A propeller provided with shiftable or reversible blades, a shifteror rod for said blades, a tubular shaft through which the rod extends, alever or handle for the shifter, and a lock or catch for locking theshifter to the shaft.

A propeller provided with shift-able blades, a shifter or rod for saidblades, and a lever or actuating-handle for the shifter, combined with ashouldered sleeve moved by said lever, a catch or lock for the sleeve, areleasing collar or wedge on the sleeve for disengagin g the catch, anda lever or handle for said releasing-collar substantially as described.

4. A propeller provided with shiftahle blades, a shifter or rod for saidblades,'and a primary lever or aetinitting-handle for the shifter,combined with a shouldered sleeve moved by said lever, a catch or lockfor the sleeve, a releasing collar or wedge on the sleeve fordisengaging the catch, and a secondary lever or handle for saidreleasingcollar, said secondary lever being fulcrumed to the primarylever substantially as described.

5. A propeller-hub comprising longitudinally-separable sections and ashaft about which the hub-sections are clasped, said shaft beingprovided with a rim or lugs and said hub-sections being correspondinglyrecessed to fix themselves to the shaft when clasped `about the lattersubstantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

HENRY MILLER.

lVi tnesses:

Wn. C. IIAUFF, E. F. KASTENHUBER.

